| タイトル | Flight experiments measuring boundary-layer disturbances in laminar flow and correlation with stability analysis |
| 著者（英） | Obara, Clifford J.; Lee, Cynthia C.; Vijgen, Paul M.; Wusk, Michael S. |
| 著者所属（英） | High Technology Corp.; NASA Langley Research Center; Analytical Services and Materials, Inc. |
| 発行日 | 1991-06-01 |
| 言語 | eng |
| 内容記述 | Flight test results are reported from an experiment designed to study the detailed growth of disturbances in the laminar boundary layer. A gloved wing section incorporating closely-spaced flush-mounted streamwise-located instrumentation for measuring instability frequencies and amplitude growths as well as pressure distributions was used. The growth of Tollmien-Schlichting (T-S) and crossflow instabilities is predicted by the linear e exp n method and compared to the measured boundary-layer disturbance frequencies. The predictions showed good agreement with the measured data. The results exhibited fair agreement with previous n(T-S) and n(CF) flight correlations for several of the conditions analyzed. It is inferred from the high n(T-S) values for these data that moderately swept wings at compressible speeds can withstand higher combinations of n(T-S) and n(CF) values and still remain laminar than previously thought. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 91A43563
AIAA PAPER 91-1635 |
| 権利 | Copyright |
